What is a compound that is not a molecule?

Answer:
Ionic compounds are not molecules.
Examples include sodium chloride (NaCl), magnesium sulfate (MgSO4), calcium carbonate (CaCO3), and Iron oxide (FeO, Fe2O3, or Fe3O4).
First answer by Stormish. Last edit by Stormish. Contributor trust: 536 [recommend contributor recommended]. Question popularity: 2 [recommend question].